682121623 has 2 divisors, whose sum is σ = 682121624. Its totient is φ = 682121622.

The previous prime is 682121621. The next prime is 682121647. The reversal of 682121623 is 326121286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 682121623 - 2¹ = 682121621 is a prime.

Together with 682121621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (682121621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341060811 + 341060812.

It is an arithmetic number, because the mean of its divisors is an integer number (341060812).

Almost surely, 2^682121623 is an apocalyptic number.

682121623 is a deficient number, since it is larger than the sum of its proper divisors (1).

682121623 is an equidigital number, since it uses as much as digits as its factorization.

682121623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 682121623 is about 26117.4582032785. The cubic root of 682121623 is about 880.2795354203.

The spelling of 682121623 in words is "six hundred eighty-two million, one hundred twenty-one thousand, six hundred twenty-three".